Combined level and plummet.



A. L. GOASH. COMBINED LEVEL AND PLUMMET.

Mb h A L. Coda/i,

Patented Apru28,1914.

I VIII/fl fvflluflll 4' APPLIOATION FILED T11R24, 1913.

wane/Mao To all whom it may concern:

of'lndiana, have invented certain new an like.

ARTHUR L. coasn, or HAMMOND,

INDIANA.

COMBINED LEVEL AND PLUMME/I'.

Specification of Letters Patent.

Patented Apr. 28, 1914.

Application filed February 24, 1913. Serial No. 750,242.

1 3e it known that I, ARTHUR L. Coasn, a citizen of the United States,residing at Hammond, 1n the county ofLLake and State useful Improvementsin Combined Levels and Plummets, of which the following is aspecification.

My invention relates to a combined level and plummet.

An important object of this invention is to provide an apparatus of theabove mentioned character, which is simple in construction, cheap tomanufacture and durable.

A further object of this invention is to provide means whereby thereflector ror may be accurately adjusted to a'desired angle and held atsuch adjustment without liability of accidental I displacement.

A further object of this invention is to rovide means whereby thedifferent parts of the apparatus may be readily removed from or insertedinto their operative positions.

Other objects and advantages of this invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame, Figure 1 is a plan view of the apparatus, Fig. 2 is a side view ofthe same, Fig. 3 is a central longitudinal sectional view therethrough,parts being shown in elevation, Fig. 4; is an elevation of one end ofthe apparatus, and, Fig. 5 is a similar view of the opposite end.

In the drawings, wherein for thesake of illustration, I have shown apreferred bodiment of my invention, the numeral 6 designates a block,stock or body portion of the apparatus, which is preferably formed ofwood and has its opposite ends protected by heads 7 and 8, which arepreferably formed of metal, such as brass, copper or the The head 7 isprovided with an opening 9, in registration with a longitudinal opening10 extending parallel with the longitudinal axis of the block or bodyportion 6, as shown. At its inner end the longitudinal opening 10 leadsinto an enlarged opening or chamber 11, as shown.

Rigidly mounted within the lower portion of the chamber or opening 11 isa holding bracket 12, which is held in place by screws 13 or the like,as shown. This holding 1' 15 is abracket 16, the

bracket 12 comprises upstanding spaced ears or lugs 14:, between whichis mounted a reflector or mirror 15. Mounted upon the upper or oppositeend of the reflector or mirror forked end of which snugly receives'saidreflector or mirror, as shown. The outer portion of the bracket 16 1sapertured for receiving therethrough an ad usting screw 17, operatingthrough a screw-threaded opening formed in a plate 18, as shown. Thisplate 18 is held in place by screws 19 or the like. Disposed below thereflector or mirror 15 is a suitably stiff and compressible curved orbored leaf-spring 20, the free ends of which engage the reflector ormirror, as shown. The lower end of the leaf-spring 20 preferably extendsinto the opening between the lugs 14, as shown. The leaf-spring 20 isalways under tension, whereby it serves to hold the reflector or mirror15 outwardly in the desired angular position; It is obvious that byturning the adjusting screw 17, the angular position of the mirror 15may be slightly varied, which is important when the same is beingadjusted to the desired angular position at which it is to remain whenthe apparatus is in, use. The reflector or mirror 15 is shown asarranged at an angle of 15 to the horizontal but it is to be understoodhowever thatthe same may be moved to any other desired angular position.

Disposed inwardly of and adjacent the opening'9 is a sight plate 21,which is preferably semi-circular and is provided at its center with arelatively small opening 22. The upper portion of the chamber or opening11 is normally closed by a horizontal plate 23, which is preferablyformed of metal, such as copper. brass or the like. This plate is heldin place by means of screws 24. or the like. The plate 23 is providedwith an opening 25 disposed at a right angle to the opening 9. Disposedinwardly of the opening 25 and adjacent the same is a second sight plate26 which is preferably. semi-circular and is provided at its center witha relatively small opening 27.

The plate 23 is provided with a longitudinal opening 28, through whichmay be seen a screw 33 or the like. An-adjusting screw 34 passes throughthe opposite end of the support 29 and o crates through a screwthreadedopening ormed in a fixed plate 35, which is held in place by screws 36or the like. A section of rubber 37 or the like is preferably interposedbetween the support 29 and the plate 35. It isthus seen that by propermanipulation of the screw 34 the support 29 may be accurately adjustedto assume a position parallel with the longitudinal axis of the block orbody portion 6. Disposed upon the opposite sides of the block or bodyportion 6, is a curved plate 38, having an enlarged opening 39 formedtherethrough, whereby the spirit level de-' vice may be readily observedfrom the side of the apparatus. From the above disclosure it is obviousthat the spirit level device may not only be pro erly an arly ad'ustedbut may be rea ily rem ila d when desired.

Formed through the end of the body portion or block 6 adjacent the head8 is an enlarged transverse opening 40, having its upper wall curved andits -'lower wall 41 straight and disposed at a right angle with relationto the longitudinal axis of the block or body portion 6. The opening 40leads into a horizontal opening or recess 42, as shown. The horizontal oening 42 is normally closed by a remova le plate 43, held in place byscrews 44 or the like.

The numeral 45 desigates a vertical spirit level device of any wellknown or preferred type but preferably comprising a support 46, carryinga shell 47 which holds a transparent or glass tube 48 containing thespirit liquid. The support 46 has its upper end bent to form ahorizontal extension 49, disposed at a right angle thereto. Thishorizontal extension is detachably connected with a horizontal wall 50by means of a screw 51 or the like.

It IS obvious that the vertical spirit level device may be readilyremoved. Should the same for any reason lose its angular adjustment, thetrouble may be overcome by removing the same and properly angularlyadjusting the extension 50 with relation to the support 48, subsequentlyto which the spirit level device may be returned to its operativeposition. Disposed upon the opposite sides of the walls of the bodyportion or block 6 are protecting. plates 52, whichsurround the opening40, as shown.

In th tal spirit level deviceis employed to ascertain whether a sill orthe like is horizontal and the vertical spirit level device is employedto determine whether a corner post or the like is perpendicular.

It is to be understood that the form of my invention herewith shown anddescribed, is to be taken as a preferred example of the same, and thatcertain changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of the invention or thescope of the subjoined claim.

Having thus fully described my invention, I claim Apparatus of thecharacter described, comprising a supporting element, a bracket attachedto th vided with an outwardly extending flange, a reflector having oneend thereof engaging and disposed upon the inner side of the flange, asecond bracket having holding engagement with the opposite end of thereflector, adjusting means connecting the second bracket with thesupporting element, and a compressible longitudinally curved leaf-springarranged between the reflector and the supporting element with its endsengaging opposite ends of the reflector to exert outward yieldingpressure thereon.

In testimony whereof I aflix my signature presence of two witnesses.

ARTHUR L. OOASH.

Witnesses:

E. G. SPROAT, EMMA E. Gums.

e supporting element and pro e use of the apparatus, the horizon-;

